Research On Design And Production Of High School Chemistry Micro-lecture Based On Model Cognition

Since the new curriculum reform,emphasis has been placed on the integration of education and information technology.With the increasing influence of information technology in classroom teaching,micro-lecture emerged as a new form of teaching.In the actual education and teaching research,many researchers have found that there is a state of "disordered" in the existing micro-lectures.The "General High School Chemistry Curriculum Standards(2017)" clearly states that the cultivation of students’ key competencies,how to effectively cultivate students’ key competencies has become a research hot spot.Based on this,this study aims to design and produce a micro-lecture based on chemical key competencies research.Therefore,it promotes the cultivation of students’ key competencies,and improves the problem of micro-lecture design and production without theoretical guidance and fragmentation.The PEP version of the "Material Structure and Properties" module involves basic theoretical knowledge of chemical microscopic aspects,and the knowledge points are abstract and complex.Teaching with a model approach helps students build knowledge.Based on the model cognition,the process of designing and producing micro-lectures of material structure and nature is firstly analyzed in the early stage,mainly analyzing the content of textbooks,learner characteristics and teaching objectives.Followed by the micro-lecture design stage,design micro-teaching cases and micro-learning cases.Then there is the micro-lecture development stage,making micro-lectures,writing micro-lecture narration and making micro-lecture videos.Finally,the micro-lecture implementation stage,upload the micro-lecture video to the micro-lecture public number and organize the students to learn before class.According to the above process,12 micro-classes of the module "Material Structure and Properties" were designed and produced,and uploaded to the We Chat public account-"Da Hua Micro-lecture".Select the four micro-lectures to test and investigate the students to evaluate the quality of the micro-lectures and to understand the students’ suggestions for the design of the micro-lectures.The survey results show the students have a positive attitude towards the quality of the micro-lectures,and provides many valuable suggestions.At present,there are few studies on the design and development of high-chemistry chemistry series based on model cognition,which is based on model cognition.I hope this study can provide some reference value for related research.